207
TagID Voltage Sensor Defective
Fronius · Perfect Charging
What does 207 mean?
The voltage sensor integrated within the TagID module is reported as defective. This sensor provides critical voltage measurements for the battery management system (BMS) functionality and accurate state-of-charge calculations.
Common Causes
- An internal fault of the voltage sensor component itself within the TagID module.
- Physical damage to the TagID module affecting the sensor's functionality.
- A calibration issue with the sensor, leading to incorrect voltage readings.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Perform internal diagnostics on the TagID module, if available, to confirm the sensor failure.
- 2
Compare the voltage readings from the TagID with a direct multimeter measurement of the battery's actual voltage.
- 3
Consider replacement of the TagID module if the voltage sensor is integrated and not field-replaceable.
Verified technical data. Last updated: March 2026
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Source: Fronius Perfect Charging